Chapter 5 Troubleshooting
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Chapter 5 Troubleshooting
5.1 Fault Description
The MCTC-PES-E1 system provides a total of 16 pieces of fault information and protective
functions. It monitors various input signals, running conditions and external feedback
information in real time. After a fault occurs, the system implements the protection function,
and displays the fault code.
You can first determine the fault type, analyze the causes, and perform troubleshooting
according to the following tables.
Table 5-1 Description of the faults of the MCTC-PES-E1
Fault
Code
Fault Name
Description
Err1
Overspeed of
1.2 times
The running speed exceeds 1.2 times of the nominal speed during
normal running.
If this fault occurs during commissioning, check whether the setting
of parameters in group F0 is improper.
Err2
Overspeed of
1.4 times
The running speed exceeds 1.4 times of the nominal speed during
normal running.
If this fault occurs during commissioning, check whether the setting
of parameters in group F0 is improper.
Err3
Unintentional
reversal
Unintentional reversal occurs during the escalator running.
If this fault occurs during commissioning, check whether the
escalator speed detection signals (X15, X16) are reversed.
Err4
Over-braking
distance
The braking-to-stop distance exceeds the requirement.
If this fault occurs during commissioning, check whether the setting
of parameters in group F0 is improper.
Err5
Left handrail
underspeed
The left handrail speed is low.
The setting of parameters in group F0 is improper.
The sensor signal is abnormal.
Err6
Right handrail
underspeed
The right handrail speed is low.
The setting of parameters in group F0 is improper.
The sensor signal is abnormal.
Err7
Up step loss
Check whether F0-06 is set to a value smaller than the actual value.
Err8
Down step loss
Check whether F0-06 is set to a value smaller than the actual value.
Err9
Service brake
release fault
The working brake signal is abnormal.
Err10
Auxiliary brake
action fault
The mechanical switch feedback is inactive after braking.
The auxiliary brake switch is active at startup.
The auxiliary brake is not released at startup.
The running in the upward direction exceeds 10s when the auxiliary
brake switch is active.
The auxiliary brake switch is active during running.
The auxiliary brake contactor is disconnected during running.
